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SkyPlot is a DOS program.  It has old style menues. You enter values on a 
setup screen, then go to a separate plot screen, then run a step that builds 
a "PRN" file, then display/print this file with wordpad or some such.

I really like it.  The print file lists the HC and Zn of all 57 nav stars plus 
sun, moon, and 4 planets (if visible).  It has a disclaimer that the planet, 
moon data may be off by more than a mile.  So what!

It will also display/print an image that shows you what stars, etc you would 
see for the date, time, DR, you entered.

A really agravating, nit picky little thing that bothers me every time I use 
it is that you enter lat/lon in degrees and decimals even though it gives you 
back degrees and minutes.

I've tested it fairly thoroughly because I use it to set up plots for a celest 
nav class.  Our plotting has yet to discover any serious error on the part of 
the program.  (By serious, I mean a discrepency large enough that it wasn't 
accounted for by our inability to draw straight lines, measure distances, or 
do simple arithmetic)



Original Message:
-----------------
From: Chuck Griffiths griffiths_chuck@SI.COM
Date: Mon, 4 Feb 2002 16:58:53 -0500
To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
Subject: [NAV-L] Star Finder Software


I'm wondering if anyone knows of a good freeware option for predicting star,
planet, moon and sun altitudes and azimuths in the 2102D style. I know Celestair
sells software called SkyPlot for PC and I'd be interested to hear reviews even
though it's not free. I recently found an online program at
www.weatherunderground, the link is:http://www.wunderground.com/sky/index.asp.
It's a very nice program but the input for location is zip code rather than
lat-long so it's not much use for passage planning and the plots don't print out
very well.

Chuck Griffiths


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